[Issue #1362] Sendy Update (#2530)

frontend/README.md

@@ -195,6 +195,18 @@ It's recommended that developers configure their code editor to auto run these t
 
 \*\* Note that debugging the server-side or full-stack here doesn't debug the API. See the API
 
+## Testing the newsletter subscription form
+
+The project uses [Sendy](https://sendy.co/api) to manage the newsletter. To the `/subscribe` form locally, Sendy test environment variables need to be added to the `.env.local` file or exported as environment variables:
+
+```
+SENDY_API_KEY=
+SENDY_API_URL=
+SENDY_LIST_ID=
+```
+
+These are stored as parameters in AWS System Manager and can be obtained there or from another developer on the team. They are not available for outside contributors.
+
 ## Other topics
 
 - [Internationalization](../documentation/frontend/internationalization.md)

frontend/next-env.d.ts

@@ -1,6 +1,5 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-/// <reference types="next/navigation-types/compat/navigation" />
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/building-your-application/configuring/typescript for more information.

frontend/package.json

@@ -41,7 +41,8 @@
     "react-dom": "^18.2.0",
     "server-only": "^0.0.1",
     "sharp": "^0.33.0",
-    "use-debounce": "^10.0.0"
+    "use-debounce": "^10.0.0",
+    "zod": "^3.23.8"
   },
   "devDependencies": {
     "@ianvs/prettier-plugin-sort-imports": "^4.0.2",